Can you overcharge the battery

Discussion in 'Gen 2 Prius Technical Discussion' started by Benjamin13295, Jul 28, 2018.

  1. Benjamin13295

    Benjamin13295 Junior Member

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    Can you damage the battery by overcharging them? Or where doses the charge go if all the bars are green, don’t want to damage the battery
     

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    #1 Benjamin13295, Jul 28, 2018
  2. Raytheeagle

    Raytheeagle Senior Member

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    That doesn’t actually mean the battery is full;).

    It’s probably more like 80-85%:).

    The Toyota battery management system ensures the battery is protected (y).
     
    #2 Raytheeagle, Jul 28, 2018
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  3. bisco

    bisco cookie crumbler

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    the engine will spin to burn off excess charge.
     
    #3 bisco, Jul 28, 2018
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  4. bisco

    bisco cookie crumbler

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    otoh, your '05 battery probably isn't long for this world anyway. i would be prepping for a change.
     
    #4 bisco, Jul 28, 2018
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  5. Raytheeagle

    Raytheeagle Senior Member

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    How fast does your battery charge and then drain?

    If it cycles between full and low on your screen, your battery is showing early signs of failure.
     
    #5 Raytheeagle, Jul 28, 2018
  6. ChapmanF

    ChapmanF Senior Member

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    If you let the car's own programming control the battery charging, no.

    If you're into cleverly defeating it, yes.

    -Chap

    [​IMG]
     
    #6 ChapmanF, Jul 28, 2018
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  7. Benjamin13295

    Benjamin13295 Junior Member

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    It charges normally and drains slowly for now hope it will last at least 10k
     
    #7 Benjamin13295, Jul 28, 2018
  8. Raytheeagle

    Raytheeagle Senior Member

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    Can you help us by quantifying the drain and charge rates:

    If you put the ac on full blast, how long does it take to drain from a full start?
    When fully drained then going down a hill, how fast does it fill up and how many bars does it get to?

    We’re data driven folk, so anyway you can quantify, helps(y).
     
    #8 Raytheeagle, Jul 28, 2018
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